/*
 * Copyright 2012-2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.ylzl.eden.extension.factory;

import org.ylzl.eden.extension.ExtensionFactory;
import org.ylzl.eden.extension.ExtensionLoader;
import org.ylzl.eden.extension.SPI;

/**
 * SPI 扩展点实例工厂
 *
 * @author <a href="mailto:shiyindaxiaojie@gmail.com">gyl</a>
 * @since 2.4.13
 */
public class SpiExtensionFactory implements ExtensionFactory {

	@Override
	public <T> T getExtension(Class<T> type, String name) {
		if (type.isInterface() && type.isAnnotationPresent(SPI.class)) {
			ExtensionLoader<T> loader = ExtensionLoader.getExtensionLoader(type);
			if (!loader.getSupportedExtensions().isEmpty()) {
				return loader.getAdaptiveExtension();
			}
		}
		return null;
	}
}
